Omnigrad-M-TR11

Summary

Product identification

Product Name: Omnigrad M TR11 Product Type: Modular RTD assembly with thread and protection tube.

Application

• Universal range of application.
• Measuring range: -200 to 600 °C (-328 to 1112 °F).
• Pressure range up to 75 bar (1088 psi).
• Degree of protection: up to IP 68.

Operating limits

Ambient temperature

• Insert with head transmitter: -40 to 85 °C (-40 to 185 °F)
• Insert with head transmitter and display: -20 to 70 °C (-4 to 158 °F)
• Terminal head (without mounted head transmitter): Depends on terminal head and cable gland/fieldbus connector.
• TA30A, TA30A with display window, TA30D terminal heads: Max. 150 °C (300 °F)
• TA30P terminal head: Max. 120 °C (248 °F)
• TA20B terminal head: Max. 80 °C (176 °F)
• TA21E terminal head: Max. 130 °C (266 °F) (silicone seal), 100 °C (212 °F) (rubber seal)
• TA20R terminal head: Max. 100 °C (212 °F)

Process pressure

Maximum permitted process pressure is limited to 75 bar (1088 psi) by the threaded process connection. Specific pressure limits vary with protection tube diameter and temperature.

Maximum flow velocity

The maximum tolerated flow velocity diminishes with increasing immersion length exposed to the fluid stream.

Shock and vibration resistance

• Standard inserts comply with IEC 60751: 30 m/s² (3g) within a range of 10-500 Hz.
• iTHERM® StrongSens and iTHERM® QuickSens Pt100 sensors offer vibration resistance > 600 m/s² (60g).

Feed water

Not applicable.

Product water

Not applicable.

Electrical

Head transmitters

Available with various outputs and communication protocols:

• Analog output 4...20 mA
• HART®
• PROFIBUS® PA
• FOUNDATION Fieldbus™

Transmitter specifications

• Long-term stability: ≤ 0.1 °C/year (≤ 0.18 °F / year) or ≤ 0.05% / year.
• iTEMP® TMT18x:
  • Measurement accuracy: 0.2 °C (0.36 °F), optional 0.1 °C (0.18 °F) or 0.08%.
  • Sensor current: I ≤ 0.6 mA.
  • Galvanic isolation (input/output): Not available.
• iTEMP® TMT84 PA / TMT85 FF:
  • Measurement accuracy: 0.1 °C (0.18 °F).
  • Sensor current: I ≤ 0.2 mA (TMT84 PA) / I ≤ 0.3 mA (TMT85 FF).
  • Galvanic isolation (input/output): U = 2 kV AC.

Insulation resistance

• ≥ 100 MΩ at ambient temperature.
• Measured with 100 V DC between each terminal and the sheath.

Mechanical / hydraulic

Measuring principle

• Uses a Pt100 temperature sensor according to IEC 60751.
• Resistance: 100 Ω at 0 °C (32 °F).
• Temperature coefficient: α = 0.003851 °C⁻¹.
• Types of platinum resistance thermometers:
  • Wire wound (WW): Suitable for temperatures up to 600 °C (1112 °F). Offers good long-term stability but is sensitive to vibrations.
  • Thin film (TF): Smaller size and better vibration resistance. Tight tolerance category A as per IEC 60751 observed up to approx. 300 °C (572 °F). Generally used below 400 °C (932 °F).

Response time

• Tests in water at 0.4 m/s (1.3 ft/s), 10 K temperature step change (Pt100, TF/WW, without transmitter):
  • Reduced tip (∅ 5.3 mm): t50 = 7.5 s, t90 = 21 s
  • Tapered tip (∅ 6.6 mm or ∅ 9 mm): t50 = 11 s, t90 = 37 s
  • Straight tip (9 x 1 mm): t50 = 18 s, t90 = 55 s
  • Protection tube 11 x 2 mm: t50 = 7.5 s, t90 = 21 s (reduced tip), t50 = 18 s, t90 = 55 s (tapered tip)
  • Protection tube 12 x 2.5 mm: t50 = 11 s, t90 = 37 s (tapered tip), t50 = 38 s, t90 = 125 s (welded tip)

Material

• AISI 316L / 1.4404, 1.4435: Max. recommended temperature for continuous use in air: 650 °C (1200 °F). High corrosion resistance, especially in chlorine-based and acidic, non-oxidizing atmospheres.
• AISI 316Ti / 1.4571: Max. recommended temperature for continuous use in air: 700 °C (1292 °F). Increased resistance to intergranular corrosion after welding.

Terminal heads

• TA30A / TA30A with display window / TA30D: Aluminum, polyester powder coated. Degree of protection: IP66/68 (IP66/67 for ATEX). Max. temperature: 150 °C (300 °F).
• TA30P: Polyamide (PA), antistatic. Degree of protection: IP65. Max. temperature: 120 °C (248 °F). Suitable for hazardous locations (Ex ia).
• TA20B: Polyamide (PA). Degree of protection: IP65. Max. temperature: 80 °C (176 °F). 3-A® marked.
• TA21E: Aluminum alloy. Degree of protection: IP65. Max. temperature: 130 °C (266 °F) (silicone seal), 100 °C (212 °F) (rubber seal). 3-A® marked.
• TA20R: Stainless steel SS 316L (1.4404). Degree of protection: IP66/67. Max. temperature: 100 °C (212 °F). LABS-free, 3-A® marked.

Protection tube dimensions

Diameters available: ∅ 3 mm (0.12 in), ∅ 6 mm (0.24 in), 9 x 1 mm (0.35 in), 11 x 2 mm (0.43 in), 12 x 2.5 mm (0.47 in).

Tip shape

Available tip shapes include reduced, tapered, and straight, according to DIN 43772. Welded tips are also available.

Process connection

• Threaded: M20x1.5, G3/8" BSP, G½" DIN / BSP, G¾" BSP, NPT ½", NPT ¾".
• Cylindrical: M, G versions.
• Conical: NPT, R versions.

Weight

From 0.5 to 2.5 kg (1 to 5.5 lbs) for standard options.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

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